Pumping-power.



G. E. CLARK. PUMPING POWER.

APPLICATION FILED NOV. 10, 1903.

Patented Feb.20, 1912.

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G. E. CLARK. PUMPING POWER. APPLICATION FILED 11017.10, 1908.-

Patented Feb. 20, 1912'.

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O. E. CLARK.

PUMPING POWER. APPLIOATION FILED NOV. 10, 190B. I I 1,01 7,739. PatentedFeb. 20, 1912.

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CHARLES E. CLARK, 0F WELLSVILLE, NEW YORK.

PUMPING-POWER.

Specification of Letters Patent.

Patented Feb. 20, 1912.

Application filed November 10, 1908. Serial No. 461,930.

To all whom it may concern:

Be it known that I, CHARLES E. CLARK, a citizen of the United States,and a resident of VVellsville, in the State of New York, have inventedcertain new and useful Improvements in Pumping-Powers, of which thefollowing is a specification.

My invention relates to powers, particularly pumping powers. Inapparatus of this character it is usual to transmit motion from acontinuously driven shaft to an oscillating master wheel by a singlecrank and suitable connections. severe strain on the center pin on whichthe master wheel is pivoted. To obviate this difiiculty I have providedthe crank shaft with a second crank arranged oppositely to the othercrank and connected to the master wheel at a point opposite theconnection to the other crank, thus making a balanced construction andminimizing friction. The arrangement just described does not however ofitself avoid the difliculty known as the quarreling of the connectingrods, which, as will appear more clearly hereinafter, are shorter or donot reach so far in a direction at right angles to the crank shaft atthe quarter or mid stroke when they extend at an angle to saiddirection, as they do at the extreme or dead center positions when theycoincide with said direction. This shortening of the connections tendsto move the master wheel bodily toward the crank shaft, and, if themaster wheel is mounted in the ordinary way and is provided withimmovable wrist pins, the center pin on which the master wheel ismounted is subjected to a very severe strain. I avoid this by making theoperative connections automatically compensating, either by soconstructing the connections that they will lengthen automatically atmid stroke, or by so mounting the master wheel that the distance betweenit and the crank shaft will automatically shorten at mid stroke to com-.pensate for the shortening of the connections. The wrist pin or otherconnection between the pitman and the master wheel may be so mounted asto be capable of automatic movement to lengthen the connections, or

- the master wheel may be mounted so as to be capable of bodily movementtoward the crank shaft.

To the end above set forth my invention consists in an automaticallycompensating power more particularly set forth in the This arrangementcauses a.

claims appended hereto and one form of which is illustrated anddescribed in this application.

Referring to the drawings; Figure 1 is a plan view of my power. Fig. 2is a vertical section through that diameter of the master wheel on whichare located the centers of the wrist pins. Fig. 3 is a horizontalsection through the hub of the master wheel and adjacent partsillustrating the manner in which the wheel is mounted. Fig. 4 is a planview showing diagrammatically the movement of the parts. Fig. 5 is aside elevation of my power. Fig. 6 is a perspective view of the crankwrist pin and related parts.

In the figures thus briefly described 1 is the frame and 2 the drivingshaft provided with the pulley 3 by which it is driven.

4 is a crank shaft journaled in suitable bearings 5 in the frame 1.

6' and 7 represent the gearing through which the shaft 2 drives theshaft 4:.

8 is a master wheel mounted in the following manner. The frame 1 has anupright immovable center pin 9 on which is journaled by its sleeve 10 arocker frame. This sleeve extends through an aperture 12 in the hub 13of the master wheel 8 and is provided with a base plate 1 1 on whichrests the hub of the master wheel and with a correspond ing projection15. The base l t and the projection 15 are provided with registeringholes into which is tightly driven (preferably by hydraulic power) theoscillating pin 16. The master wheel 8 is provided with a sleeve 17integral with its hub 13 the bore of which is of slightly greaterdiameter than that of the pin 16. Before the pin 16 is forced into theholes in the projection l5and base 16 of the rocker frame the said frameis put through the aperture 12 in the hub 13 of the master wheel 8 andthe bore of the sleeve 17 of the master wheel is placed in registry withthe holes in the parts 14.- and 15. The pin is then forced into positionand the rocker frame with the master Wheel is placed upon the center pin9. It will be apparent that the rocker frame and all the parts mountedthereon including the master wheel are capable of oscillation about thecenter of the pin 9. It will also be clear that the master wheel inaddition to being capable of such oscillation is capable of oscillationabout the center of the pin 16 on which as stated it is loosely mounted;

Universal operative connections are provided between the crank shaft andthe master wheel. The shaft at is provided with two cranks 18 set 180apart, one on eachend of the shaft. Each of these cranks is providednear its end with a wrist pin 19. The master wheel 8 is provided withtwo wrist pins 20 set 180 apart on the same diameter of the masterwheel. All these wrist pins are ball pins. A pitman 21 connects thewrist pin on the crank with the corresponding wrist pin on the master.wheel and these pitmen are provided each end with spherical sockets 22forming with the ball wrist pins universal joints. This mountingprovides for the transverse movement of the ends of the pitmen resultingfrom the movement of these wrist pins on an arc.

The master wheel which may obviously be a segment, a plate, or askeleton frame, has teeth 23 in its periphery in which are mounted pins24 by means of U-shaped connecting bolts 25. Pumping rods 26 areconnected to these pins. The construction just described is thecustomary one and enables the power to be applied in any direction,since the pins may be attached between any pairs of teeth throughout thecircumference of the wheel.

The object of my invention and of the particular construction abovedescribed in which I have embodied it has already been briefly stated.The nature of the difliculty and the manner in which I have met it willhowever be clearer on reference to Fig. t of the drawings and in view ofthe following explanation: In this diagrammatic figure a represents theposition of the wrist pins 19 at the outer extreme or dead centerposition and a the position of the centers of the wrist pins 20 at thesame point in the stroke.

'6 represents the position of the centers of the wrist pins 19 at theinner extreme or dead center'positibn, and Z) represents the position ofthe centers of the wrist pins 20 at the same point in the stroke. Itwill be noted that the lines a a and b b are both at right angles to theaxis of the crank shaft. 0 represents the position of the centers of thewrist pins 19 at the quarter or mid stroke position. 0 represents theposition of the centers of the wrist pins 20 at the same point in thestroke. It will be noted that the lines 0 a do not extend at' rightangles to the axis of the crank shaft, and it will therefore be obviousthat the points 0 will be nearer to the crank shaft than they would beif the. line 0 a lay in the same vertical plane with the lines a a.

This will be apparent from Fig. 4.,the diagrammatic view, in which theplanes a b bisecting the master wheel also pass through the axis (Z ofthe pin 9, but in which the plane 0 0 bisecting the master wheel andpassing through the centers of the wrist pins 20 at mid stroke does notpass through the axis d of the center pin 9 but is displaced toward thecrank shaft.

To avoid undue strain on the parts and to obviate the diflicultydescribed, I either provide a construction in which the connections mayautomatically lengthen at the points in the stroke at which they wouldotherwise be too short, which may be done by making the wrist pins 20movable with respect to the master wheel, or I make the master wheelbodily movable automatically toward the crank shaft so that as theconnections shorten the distance shortens. In the preferred embodimentof the invention illustrated in this application I have avoided thedifliculty by the latter means.

6 represents the position of the center of the oscillating pin 16 at theouter dead center point in the stroke. 6' represents the position of thecenter of the said pin at the in ner dead center point in the stroke. frepresents the position of the center of the said pin at the mid stroke.

9 9 represents a plane parallel with the crank shaft and containing theaxis at of the center pin 9. The plane 0' 0 is in advance of the plane 9g in the direction of the crank shaft and passes through the axis f ofthe oscillating pin 16.

The construction I have illustrated and described leaves the pin 16 freeto oscillate about the center pin 9. And it will readily be apparentthat at mid-position the pull on both wrist pins will cause the masterwheel 8 to rock the rocker frame and oscillate the pin 16 the necessarydistance toward the crank shaft. At each dead center posit-ion the wheeland rocker frame return to the position in which the plane bisect-ingthe master wheel and passing through the axes a, b of the wrist pins 20also passes through the axis d of the center pin 9. This is true whetherthe connections are constructed to lengthen automatically or the wheelso mounted that the distance shortens automatically. i

It will be apparent that my invention re sults in aconstructionminimizing friction and doing away with unnecessary strain comprising apair of pitmen universally connected to said respective cranks anduniversally connected to opposite sides of said master wheel, saidconnections simultaneously tending to shorten at certain parts of thestroke and to lengthen at others, and means to compensate for thistendency.

2. In apparatus of the character described, a crank shaft, means forrotating said crank shaft, oppositely set cranks on said shaft, a masterwheel mounted for oscillation about its center and lying in a plane atright angles to the planes of the cranks, inelastic operativeconnections between said cranks and wheel comprising a pair of pitmenuniversally connected to said respective cranks and to opposite sides ofthe master wheel, the connection between each pitman and the masterwheel comprising a universal joint, and means for alternately increasingand decreasing the travel of one of said joints during a stroke whilealternately decreasing and increasing the travel of the other of saidjoints.

3. In apparatus of the character described, a horizontal crank shaft, avertical pin, a master wheel mounted for oscillation about the said pin,and universal inelastic operative connections between said crank shaftand master wheel comprising a pitman and a universal joint in theconnections between said pitman and master wheel having a point locatedat one part of the stroke in a diameter of the master wheel through theaxis of said pin and at another part of the stroke in a line parallel tothe said diameter but nearer the crank shaft than the axis of said pin,and means for causing the joint to change its position automaticallyduring the stroke to vary the location of the point as stated.

4. In apparatus of the character described, a crank shaft, means forrotating said shaft, a master wheel, a center pin on which said masterwheel is mountedfor oscillation, oppositely located wrist pins supported from the wheel, operative connections between said crank shaftand pins, the location and mounting of the parts being such that theplane through the wrist pin centers contains the axis of the center pinat the extreme or dead center points of the stroke but is in advance ofthe said axis at mid or quarter stroke. I

5. In apparatus of the character described, a crank shaft, means forrotating said shaft, a master wheel mounted for oscillation about afixed center at a distance from said crank shaft, and connectionsbetween said shaft and wheel for oscillating the latter said wheel beingalso free to move bodily and automatically toward said crank shaft inthe operation of the machine.

6. In apparatus of the character described, a frame, a crank shaftjournaled therein, means for rotating said shaft, a

master'wheel mounted 'for oscillation about a fixed center at a distancefrom said crank shaft, a bearing eccentric to said fixed center and tosaid master wheel and on which said master wheel is mounted foroscillation, and universal connections between said crank shaft andmaster wheel to cause said osciflation and move the axis of the masterwheel into a position in which it contains said fixed center and out ofthat position.

7. In apparatus of the character described, a frame, a crank shaftjournaled therein, means for rotating said shaft, oppositely set crankson said shaft, a fixed bearing at a distance from said crank shaft, arocker frame mounted for oscillation thereon, a master wheel mountedeccentrically with reference to itself on said rocker frame lying in aplane at right angles to the planes of the cranks, and a pair of pitmenuniversally connected to said respective cranks and to opposite sides ofsaid master wheel.

8. In apparatus of the character decribed, a frame, a horizontal crankshaft journaled therein, means for rotating said shaft, a vertical pin,a master wheel lying in a horizontal plane and mounted for oscillationabout said pin, universal connectionsbetween said crank shaft and masterwheel, and means for moving the axis of the wheel into and out of theaxis of the pin.

9. In apparatus of the character described, a frame, a crank shaftjournaled therein, means for rotating said shaft, a fixed pin on saidframe at a distance from the crank shaft, a rocker frame mounted foroscillation on said, pin, a masterwheel having an open hub surroundingsaid pin and spaced therefrom, said master wheel being mounted foroscillation on said rocker frame on an axis eccentric to said wheel, anduniversal connections between said crank shaft and master wheel.

10. In apparatus of the character described, a frame, a crank shaftjournaled therein, means for rotating said shaft, a rocker frame mountedfor oscillation on said first frame at a distance from said crank shaft,a master wheel mounted for oscillation on said rocker frame on a bearingeccentric to the master wheel, oppositely set cranks on said crankshaft, and a pair of pitmen universally connected to the respectivecranks and to opposite sides of the master wheel.

11. In apparatus of the character described, a frame, a crank shaftjournaled therein, means for rotating said shaft, a rocker frame mountedfor oscillation on said frame on a center distinct from said crankshaft, a pin fixed in said rocker frame, a

master wheel mounted for oscillation on said 13. In apparatus of thecharacter de-;

scribed, a frame, a horizontal crank shaft journaled therein, means forrotating said shaft, a stationary Vertical pin on the frame, a rockerframe mounted for oscillation on the pin, a Wheel mounted foroscillation with respect tosaid rocker frame in a horiv zontal plane,said frame having an extension supporting the wheel at a distance fromthe axis about which it oscillates with respect to the rocker frame, andoperative connections between said crank shaft and wheel.

Signed byme at Wellsville New York, this 9th day or November 1908.

CHARLES, E. CLARK. Vitnesses:

INEZ FARNUM, WM. R. VAN OAMPEN.

Copies of 'thispatent may be obtained for five cents each, byaddress'ingrthe Commissioner of Patents,

Washington, D. G. l a

